Sorry for posting in php.
Actually all the fields are inside one table. So by increasing the size or rows and cols attribute,all other fields move aside in a form.So is there any other option in table tag for doing this. Please tell me.

The <td> tag has a "colspan" attribute that determines how many columns it takes up in the resulting table.

However, you have tables within tables here, and you're using tables for layout. The proper solution is to read up on how to use DIVs for layout so you don't run into table-based spacing issues like this one.